Heating system.



PATENTBD MAY ,8, 1906.

1?. SHURTLEFF. HEATING SYSTEM.

APPLICATION FILED MAY 1, 1905.

2 SHEETSSHEET 1.

INVENTOR ii' aiz/fl J'fi urlle I WITNESSES:

ATTORNEYS No. 820,320. PATENTED MAY 8, 1906 P. SHURTLBFF. HEATING SYSTEM.

APPLICATION TILED MAY 1 1905.

2 SHEETS-3HBET 2 W/TNESSES:

INVENTOR ATTORNEYS through a nozzle 11* in t UNIT D STATES PATENT oFFion.

FRANK SHURTLEFF, OF MOLINE. lLLINOIS, ASSIGNOR= OF ONE-HALF TO EDWARD H. SLEIGHT, OF MOLINE. ILLINOIS;

HEATING SYSTEM.

Specification of Letters Patent.

' .E-atenteci May s, 1906.

Application filei May 1,1905. Serial No. 258,251.

To all whom, it may concern:

Be it known that I, FRANK SHURTLEFF, a citizen of the UnitedStates, residing at Moline, in the county of Rock Island and State of Illinois, have made certain new and useful Improvements in Heating Systems, of which the following is a specification.

This invention relates to steam-heating systems, and particularly to that class thereof known as vacuum systems wherein alow or less than atmospheric ressure 1s util- .ing, backpressure, discharge of foul air and Water into the rooms, increased cost of installation and attendance, and the like.

T he object of my invention is to provide an apparatus free from such defects and characterized by improved means for venting the air from the radiators by ejecting devices all located'at one oint and discharging such air outside the bin ding or rooms and for sealing the system against return of the air. This object is effected by the apparatus hereinafter described, and shown in the accompanying drawings, in which Figure 1 is a sectional elevation of the system. Fig. 2 is an enlarged detail in section of the ejector. Fig. 3 is an enlarged sectional detail of a sealing device for maintaining the vacuum.

Referring specifically to the drawings, 6 indicates a boiler or steam-generator of any suitable construction, and 7 the steam-pipe, having suitable branches '7 leading to the radiators 8, respectively. Valves are provided at 9 controlling the inlet to the respective radiators. The return-pipe is indicated at 10, leading froinsuitable branches connected to the radiators back to the waterspace of the generator.

Beyond the radiators the supply and return pipes have, respectively, branches 11 and 12 leading to an ejector or inspirator 13, and the pipe 11 dischar es a jet of steam fie ejector, which is connected to a condenser comprising a tank 14'and a coil 15 therein. The steam-pipe l 1 of the ejector has a hand-valve 11 to rogulate the suction and limit, if necessary, the heat in the condenser. with cold Water through suitable house or service connections, and the coil receives mixed air and steam from the ejector. The pipe 11 is connected to the return-pipe above the water-level in the boiler. The coil is connected at its lower end to a pipe 1.6, which branches into a rising air-pipe .17 and a descending water-pipe 18, which latter joins the return-pipe 10, which extends thence to the Water-space of the boiler, preferably through or within the return side of the steam-pipe 7, so that the return-Water is heated to substantially even temperature with the water in the boiler before entering the same. A check-valve is placed at 19 to prevent backfiow, The pipe 17 leads to a se ries of automatic air-vents 20 of known construction in a casing 21, a plurality of vents being employed, so that operation is assured even should one stick or otherwise fail to work. The casing 21 isair-tight except a vent 22, leading through the wall of the building to the outside and discharging, preferably, through a rosehead 23, having a netting 24 to keep out insects.

The tank is supplied With the attachment shown in Fig. 3 the g;

vent 22 instead of-opening directly to the atmosphere extends to a bell 25, the rim of which dips below water in a tank 26, located by preference in the basement. At the top of the bell is a valve 27, controlled by a float 28 in the bell to open or close the vent 22 and providing a water seal therefor, but allowing escape of the air through the water. when the valve is open. As shown, the ejector is in communication with allthe radiators, and in o eration the steam-jet flowing from the nozz e l1 sucks the air out of the radiators and the return-pipe and forces the moist air into the condenser-coil, where the steam and vapor condenses. A suction or vacuum is also thus roduced, which causes quick action or 'supp y of steam to the radiators. The wathe vacuum in the boiler and radiators.

It will be seen that the vents are not on the radiators and ill-smelling air or water is not discharged there. The return connections are wide open at all times, so that slow service and pounding are obviated and a. constant circulation assured, providing more heat than usualwith the same pressure.

What I claim is 1. The combination with a steameheatin system having, a pipe connected to the bottom of all of the radiators for the return of the water of condensation and the discharge of air therefrom, of an air-riser pipe connected to sa'id'pipe for separating the air from thewater therein, a condenser through which said air-pipe extends, an air-vent connected to said air pipe beyond the condenser, and a water-return ipe also connected to said'airpipe beyond t 2. The combination with a steam-heating system-having a common return-pipe con nected to the radiators, of an air-venting pipe connected to said return-pipe beyond the ra- 'diators, an ejectorin said air-pipe to suck air therethrough, and acondenser beyond the ejector through which said vent-pipe extends. 3. The combination with a steam-heating system having a common return-pipeconnectedto the radiators, of an air-venting pipe I 1e condenser and leading back .to the'boiler.

connected to said return-pipe beyond the radiators, an ejector in said air-vent ipe operated by steam from the boiler oi the system, a condenser through which-said ventpipe extends beyond the ejector, and a water-of-condensation-return pipe connected to said vent-pipe beyond the condenser and leading back to the boiler.

4. The combination with a steamheating system having a common return-pipe connected to the radiators, of an ejector having its suction-pipe connected to said return-pipe above the water-level in the boiler, said ejector operating by steam from the boiler, a con-- denser having a pipe into which said ejector discharges leading to an air-vent, and a water-return pipe connecting said condenserpipeandback'to the boiler.

5. The. combination with a steam-heating system having a common return-pipe leading from the, radiators ,of a plurality of air-vents connected to said pipe, and an inclosed casing for the vents, provided with a discharge pipe. I The combination with a vacuum steam-- 6; heating system, of a plurality of air-vents common to the radiators thereof, an inclosed casing over said vents having adischargepipe with an outlet-valve, and a-,-,tank containing liquid in which the end of the pipe is valve. j I

FRANK SHURTLEFF 5 'Witnesses: I

L. O. JAHNS,

' JA Es D'. DoNAHoo.

sealed, having a float therein controlling said 

